Coupling interface



FIG. 1 is a left, front perspective view of a coupling interface.

FIG. 2 is a left side view of the coupling interface of FIG. 1.

FIG. 3 is a rear view of the coupling interface of FIG. 1; and,

FIG. 4 is a front view of the coupling interface of FIG. 1.

The top view and bottom view of the coupling interface of FIG. 1 are thesame as the left side view shown in FIG. 2.

The right side view of the coupling interface of FIG. 1 is a mirror ofthe left side view shown in FIG. 2.

The features shown in broken lines form no part of the claimed design.

CLAIM The ornamental design for a “coupling interface,” as shown anddescribed.